S&S Cycle 551 Easy Start Camshaft Kit - 106-5442

Upgrade your Harley-Davidson Touring motorcycle with the S&S Cycle 551 Easy Start Camshaft Kit. This kit is engineered for 88", 96", 103", and 106" engines, delivering a significant boost in low-end and midrange torque for enhanced riding performance. The S&S Cycle camshaft kit provides an easy start by reducing crank compression, ensuring your engine starts smoothly every time.

Description

The S&S Cycle 551 Easy Start Camshaft Kit is designed to optimize the performance of your 88", 96", 103", or 106" Harley-Davidson Touring motorcycle. This bolt-in kit greatly improves low-end and midrange torque, providing a noticeable increase in power from idle to 4000 rpm. The innovative easy start feature reduces crank compression during startup, making it easier on your starter and battery. Once the engine is running, the compression release lobe retracts, allowing the engine to run at full compression without any performance loss. Designed for use with slip-on mufflers and compression ratios between 9.0:1 and 9.9:1, this kit ensures optimal performance and reliability. The S&S 551 cam is designed for a gear drive. This kit includes everything needed for installation, offering a straightforward upgrade for stock or mildly modified engines.

Features & highlights

• Easy Start technology reduces cranking compression for effortless starts.
• Optimized for 88", 96", 103", and 106" Harley-Davidson Touring models.
• Significantly improves low-end and midrange torque.
• Provides strong performance from idle to 4000 rpm.
• Bolt-in design for easy installation in stock or mildly modified engines.
• Includes all necessary components for a complete installation.
• Made in the USA with high-quality materials for durability and reliability.

Technical specifications

• Brand: S&S Cycle
• Type: Gear
• Grind: 551 Series
• Intake Open: 17°
• Intake Close: 19°
• Intake Duration: 215°
• Intake Lift: 0.550"
• Intake Lift at TDC: 0.178"
• Intake Lobe Centerline: 91°
• Exhaust Open: 41°
• Exhaust Close: 17°
• Exhaust Duration: 237°
• Exhaust Lift: 0.550"
• Exhaust Lift at TDC: 0.170"
• Exhaust Lobe Centerline: 102°

Important to know

• Not recommended for compression ratios of 10.0:1 or greater.
• Installer must check coil bind, valve-to-valve clearance, and valve-to-piston clearance.
• Not for models with OEM compression releases.
• Can be used with stock pushrods, lifters, and springs (unless otherwise noted).